There are plenty of free things to do in Lisbon. Visitors can explore some of the city’s best churches, museums and gardens while not parting with a cent – ideal for those wishing to save money or travelling on a budget. A fantastic bargain is the free classical music concerts staged at Palácio Foz, where you can listen to wonderful recitals in opulent surroundings. There’s no charge to enter the Museu do Aljube-Resistência e Liberdade, which is ironic considering this museum is all about the price some have paid fighting for freedom. Another free-to-enter attraction is the underground archaeological site, the Núcleo Arquelógico, set under the streets of Lisbon’s Baixa district. Similarly, the remarkable D. Dinis Wall is reached by delving underground, and is also a complimentary experience. If you feel like chilling out nip over to the verdant Jardim da Estrela, a beautiful little park where you can stroll or picnic in landscaped grounds. However, if it’s really hot take the train and head over to Praia do Carcavelos, a large sandy beach on the Lisbon Coast just 20 minutes out of the city centre. Lisbon is punctuated with miradouros, purpose-built viewpoints that afford fabulous panoramas across the city that cost nothing visit. A rewarding way to spend a morning is at the Feira da Ladra, the "Thieves' Market" where it's possible to bag a bargain as you meander freely through the city's largest flea market. On the western edge of the capital is the interesting Cemitério dos Prazeres, a large cemetery noted for its monumental tombs and baroque mausoleums. Free guided tours are conducted on a daily basis. And there's no charge to explore the exuberant interior of one of the city's most visited churches, Igreja de São Roque, located in Chiado. Prepare to be wowed!